Volume 40 Issue 10
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PEI Yiyao, GUAN Xintao, HUANG Jinglin, et al. Study on enhanced heat transfer of power-law fluids in microchannels using flexible vortex generators and tandem cylinders[J]. Journal of Aerospace Power, 2025, 40（10）：20240458 doi: 10.13224/j.cnki.jasp.20240458
Citation: PEI Yiyao, GUAN Xintao, HUANG Jinglin, et al. Study on enhanced heat transfer of power-law fluids in microchannels using flexible vortex generators and tandem cylinders[J]. Journal of Aerospace Power, 2025, 40（10）：20240458 doi: 10.13224/j.cnki.jasp.20240458
shu

Study on enhanced heat transfer of power-law fluids in microchannels using flexible vortex generators and tandem cylinders

doi: 10.13224/j.cnki.jasp.20240458
  • 1.

    School of Naval Architecture，OCean and Energy Power Engineering，Wuhan University of Technology，Wuhan 430063，China

  • 2.

    Southern Marine Science and Engineering Guangdong Laboratory （Zhanjiang），Zhanjiang Guangdong 410083，China

  • Received Date: 2024-07-06
    Available Online: 2025-03-26
    Abstract

  • A wall-mounted flexible vortex generator (FVG), a tandem column, and a non-Newtonian fluid were utilized to enhance the heat transfer in a microchannel. The finite element method in arbitrary Lagrangian-Eulerian (ALE) format was used to solve the continuity, momentum, and energy equations describing the flow-solid coupling in microchannels. The flow-induced vibration behavior and heat transfer performance of a power-law fluid in a symmetric wall-mounted FVGs channel were investigated by adjusting the spacing between the FVGs and the columns, and varying the power-law exponent (n) of the fluid under the condition of a fixed distance between the two columns. When the distance between the downstream column and the flexible plate Gx=1.5 and the power-law index n=1.2, Nusselt number Nu increased by 184% and the thermal performance coefficient increased by 45% compared with the straight microchannel.

     

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